Effect of chaotic interfacial stretching on bimolecular chemical reaction in helical-coil reactors

Sawyers, David; Sen, Mihir

doi:10.1016/s0923-0467(96)03132-6

Cited by 17 publications

(17 citation statements)

References 18 publications

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“…Note, the proposed mixer relies on the occurrence of additional vortices under certain flow conditions, periodic alterations of which allow achieving chaotic mixing within a simple curved channel of planar geometry. The proposed design is substantially different from other mixers relying on secondary flow effects [such as the helical-coil reactor investigated by Sawyers et al (1996)].…”

Section: Introductionmentioning

confidence: 99%

Simulation of helical flows in microchannels

2004

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Section: Introductionmentioning

confidence: 99%

Simulation of helical flows in microchannels

2004

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“…The generation of Dean vortices in curved pipes and their influence on the mixing behavior are well described in literature [19][20][21][22][23]. Dean vortices develop in curved pipes due to the continuity.…”

Section: Dean Vortices In Curved Pipesmentioning

confidence: 93%

Generation of Dean vortices and enhancement of oxygen transfer rates in membrane contactors for different hollow fiber geometries

Kaufhold

Kopf

Wolff

et al. 2012

Journal of Membrane Science

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“…These authors also observed that a miscible, homogeneous model system containing the same reacting groups produced a much lower rate of reaction. The rates of conversion of small molecular reactants have also been observed to increase under chaotic flows [95][96][97][98][99][100][101][102][103][104].…”

Section: Effect Of Mixing On Systems Undergoing Chemical Reactionsmentioning

confidence: 98%

Evolution of Nonlinear Rheology and Network Formation during Thermoplastic Polyurethane Polymerization and Its Relationship to Reaction Kinetics, Phase Separation, and Mixing

Jana

2010

Nonlinear Dynamics With Polymers

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Understanding the evolution of nonlinear rheological properties during polymerization has been of significant industrial and academic interest [1]. The industrial interest originated from the design, operation, and control requirements of polymerization processes [2,3]. The industrial polymerization processes cover a broad spectrum from bulk production of thermoplastics, such as polyolefins, to production of thermosets, such as tires, comprising many simultaneous steps, such as chemical reactions and mixing, followed by compounding, molding, and cross-linking reactions [4,5]. The most relevant and widely documented rheological property for success of industrial processes is the viscosity of the polymerizing medium, which directly influences mass, heat, and momentum transfer processes. The academic interest, on the other hand, has its roots in utilizing rheology as a valuable tool to understand the properties of polymer chains whether in bulk, in solution, or in a polymerizing medium [6]. Monitoring the changes in rheological properties, such as normal stresses, relaxation times, storage, and loss moduli, which are usually nonlinear functions of time, temperature, and morphology, has undeniable significance in providing insights into structure and properties of polymers as they develop during polymerization or during shape-forming operations such as of extrusion, injection molding, casting, and film blowing, to name a few.The nonlinear rheological properties of growing polymer chains, irrespective of the growth mechanisms -such as free-radical or step-growth -are governed by similar parameters. Chemical structure, flexibility, and mobility of chains, the available free volume during polymerization, the degree of conversion, the extent of chain entanglements, the degree of phase separation, and the presence of chemical or physical cross-links are a few of the morphological features and physical phenomena [7] with strong influence on polymerization.

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Effect of chaotic interfacial stretching on bimolecular chemical reaction in helical-coil reactors

Cited by 17 publications

References 18 publications

Simulation of helical flows in microchannels

Simulation of helical flows in microchannels

Generation of Dean vortices and enhancement of oxygen transfer rates in membrane contactors for different hollow fiber geometries

Evolution of Nonlinear Rheology and Network Formation during Thermoplastic Polyurethane Polymerization and Its Relationship to Reaction Kinetics, Phase Separation, and Mixing

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